The correct answer is A. Hastinapur.
Hastinapur was the capital of the Kuru Kingdom, which was one of the 16 Mahajanapadas during the Mahabharata period. It was located on the banks of the Ganges River in what is now the state of Uttar Pradesh, India.
Hastinapur was founded by Kuru, the ancestor of the Kuru clan. It was a prosperous city with a strong military. The city was ruled by a king who was assisted by a council of ministers.
Hastinapur was the site of many important events in the Mahabharata, including the Kurukshetra War. After the war, the city was abandoned and fell into ruins.
The other options are incorrect. Indraprastha was the capital of the Pandavas, while Kurukshetra was the site of the Kurukshetra War.